build: Switch to Java 21

Author: TrueSkrillor

Jenkinsfile

@@ -2,7 +2,7 @@ pipeline {
     agent any
 
     environment {
-        JDK_TOOL_NAME = 'JDK 11'
+        JDK_TOOL_NAME = 'JDK 21'
         MAVEN_TOOL_NAME = 'Maven 3.9.9'
     }
 

pom.xml

@@ -58,8 +58,8 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
         <!-- The following variables are required for Jenkins CI -->
         <skipTests>false</skipTests>
         <skip.surefire.tests>${skipTests}</skip.surefire.tests>
@@ -116,7 +116,7 @@
                             <spacesPerTab>4</spacesPerTab>
                         </indent>
                         <googleJavaFormat>
-                            <version>1.16.0</version>
+                            <version>1.20.0</version>
                             <style>AOSP</style>
                         </googleJavaFormat>
                         <licenseHeader>